3RW4 Sales Brochure

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    A new star is born.The extended generation of soft starters.

    siriusSOFT STARTER

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    Planetary nebulae as shown here inthe well-known Helix nebula in theAquarius galaxy are symbolic of thecontinuous cycle of matter: Createdfrom the remainders of heavenly bodies from the distant past they arealso the birthplaces for new stars.

    4/5 Trendsetter when it comes to switching, protecting, starting the modular SIRIUS system

    6/9 A new star is born

    the extended family of SIRIUS soft starters10/15 When the smoothness always returns

    soft starters for standard applications

    16/21 If violent forces have to be tamed

    soft starters for high-feature applications

    22/23 The complete family at a glance

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    Everything. Simple. SIRIUS.

    For more than 110 years, we have been developing and manufacturing

    industrial switchgear and controlgear products. And always with the claim:

    To provide you with reliable as well as innovative switchgear technology

    whether in the control cabinet, in the field or directly at the machine. This

    is the reason that we are completely combining our industrial controlgear

    technology under one single star SIRIUS.And this makes it simple for you: SIRIUS Industrial Controls not only offers

    you the complete range whether switching devices for load feeders, power

    distribution components, command and signaling devices or complete cabinet

    systems. With SIRIUS, the subject of industrial controls takes on a new

    dimension when it comes to simplicity. For example, we ensure that our

    products are simple and quick to install by using innovative connectionsystems or by continually reducing sizes. Later in operation our products

    operate with absolute reliability. We can offer you reliable products with an

    especially long lifetime thanks to the consequential standardization.

    Our portfolio can be combined to create optimized systems using our

    highlevel, seamless concepts such as Totally Integrated Power, Safety Integrated

    and ECOFAST. And if a problem does arise, we can resolve this with extremely

    fast logistics and global support. With SIRIUS Industrial Controls, you can

    relax and look towards the future.

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    Our SIRIUS star has become even brighter and is radiating the complete

    portfolio of Siemens industrial controls. The modular SIRIUS system is, just

    like before, at the center of this unique universe. With its sustainable pow-

    er of innovation and everything you require to switch, protect and start

    load feeders, it comprises modular standard components that are optimal-

    ly harmonized and easily combined as required.

    Our solar system is a unique constellation

    flexible and at the same time stable

    SIRIUS 3RW30: Conveyor belts arestarted without any torque surge,wear is minimized, maintenance

    intervals are extended.

    The standard components of our SIRIUS modular system open upalmost endless possibilities whenit comes to switching, protecting

    The advantages of the SIRIUS system at a glance

    Load feeders Up to 250 kW / 350 HP can be simply realized using standard devices

    Modular design Everything fits together and can be combined as required

    Versions and sizes Cost-effective and flexible using 7 compact sizes

    Assembly Fast commissioning, short equipping times, simple wiringCommunications Open for SIRIUS NET; can be connected to AS-Interface and PROFIBUS DP

    Service Extremely long service life, low maintenance and reliable

    Design Space-saving as a result of the low device width and side-by-side mounting up to 60 C

    Approvals Approved and certified worldwide, UL, CSA, marine engineering

    Optical design Simple, ergonomic, award-winning design

    Mounting and installing Screwed or snapped-on for safe, reliable mounting over its service life

    Service Short delivery times also for spare parts through a global logistics network

    Environmental issues Environmentally friendly production and materials, recyclable, low power-loss devices

    Accessories Low variance with an integrated range of accessories

    Cage Clamp Fast, safe, reliable connections that are vibration-proof and maintenance-free

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    ... just like ourmodular SIRIUS system.

    A worthwhile encounter with another type of star: The SIRIUS system

    Our modular SIRIUS system is being continually extended and offers you every-thing that you require to switch, protect and start motors and other loads.Modular standard components match and can be simply combined thatmakes working with SIRIUS so pleasant. With SIRIUS, all of the requirementsfrom the field can be individually and cost-effectively fulfilled. The individualcomponents distinguish themselves thanks to their space-saving design andhigh degree of flexibility. Further, engineering, installation, wiring and mainte-nance are extremely simple saving valuable time. Technically, the SIRIUS sys-

    tem fulfills the highest standards and is being continually innovated for in-stance compact soft starter solutions, solid-state switching devices and manymore. It doesnt make any difference as to whether a load feeder is configuredusing a circuit-breaker or overload relay, contactor or soft star ter SIRIUS offersthe optimum solution for every application.

    Technology perfected: The SIRIUS design

    It goes without saying that the technology of our modular SIRIUS system at-tracts a lot of acclaim. However, just taking a look inside the cabinet is also veryeasy on the eyes. Outstanding ergonomics, excellent optical design and finishresult in an open overall image clearly reflected in the fact that the SIRIUS

    series received the iF Product Design Award.Convincing flexibility: The combination possibilities

    Circuit-breakers (MSPs), contactors, soft starters and overload relays can beeffortlessly assembled using the SIRIUS system. The complete power range upto 250 kW is covered by just seven sizes. You only have to dock together, screwand the load feeder is ready.

    With SIRIUS you are never left alone: The global service network

    No matter where you are in the world whether in Oslo, Nuremberg or Cape-town, you can always enjoy the advantages of our unique modular SIRIUSsystem. SIRIUS has all of the relevant approvals worldwide and is available

    everywhere. Not only this, but the SIRIUS team, is always there for you in over190 countries.

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    Dynamics re-interpreted

    Planetary nebulae embody dynamic andenergy-laden processes. Continually in-creasing densities of matter and soaringtemperatures cause atoms to fuse andnew stars to be born.

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    Just as dynamic and energy-laden as the life cycle of the stars, our family

    of SIRIUS soft starters has taken-off back here on earth, with a seamless

    range that covers all standard and high-feature motor starting applica-

    tions. Today, the advantages of soft starting and stopping can be utilized

    in the widest range of applications to more simply and cost-effectively

    implement optimum machine concepts.

    ... the extended

    SIRIUS soft starter family.

    The smoother the better

    Today, the three-phase motor is the drive concept most often used. In manycases, direct starting or star-delta starting is not the best solution. This isbecause unpleasant secondary effects are often encountered in day-to-dayoperation for example, mechanical jolts in the machine or voltage dips in theline supply.

    Soft starters can help. While the motor is starting, soft starters continuouslycontrol the power supply to the motor adapted to the characteristics of thedriven machine. Mechanical equipment is accelerated with low associatedstress levels; this has a positive effect on the operating characteristics and thelifetime of the machine is extended.

    Whether you wish to avoid pressure surges when using centrifugal or recipro-cating pumps, ensure that conveyor systems start smoothly or you want to re-duce the starting current of your saws or of a mixer SIRIUS soft starters offer,for almost every application, the soft alternative to ensure that motors startsmoothly.

    For example, SIRIUSsoft starters can ensure

    that cooling water pumps in power

    stations accelerate inan optimized fashionand water hammer is

    avoided using a specialpump run-down

    function.

    3RW30size

    22.5 mm

    3RW30sizeS00

    3RW30size

    S2

    3RW30size

    S3

    3RW30size

    S0

    3RW40size

    S6

    3RW40sizeS12

    3RW44size

    up to 90 kW

    3RW44size

    up to 250 kW

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    Starts softly but has a powerful effect the advantages of SIRIUS soft starters at a glance

    Soft starting and stopping

    Smooth starting

    Current peaks are reduced

    Line voltage fluctuations are avoided when starting

    The line supply is relieved

    The mechanical stress on the drive is reduced

    Significant amount of space and wiring is saved when compared to conventional starters Maintenance-free switching

    Extremely simple to handle

    Fits seamlessly into the modular SIRIUS system

    Some basic information.

    What is the basic principle of a softstarter?

    Soft starters limit the startingcurrent and starting torque.Mechanical stress, as well asline supply voltage dips, are re-liably avoided. The motor volt-age is reduced using phasecontrol and is increased up to

    the line supply voltage within aselectable starting time. Soft

    starting and stopping guarantee minimumstress on the connected devices and ensuresmooth production operations.

    Can I assemble load feedersusing soft starters?

    Absolutely. Small fuseless load feeders can beeasily assembled using motor starter protectors -e.g. SIRUIS 3RV. Fused load feeders can be quick-ly implemented in a space-saving fashion in con-junction with thermal or electronic overload re-

    lays.

    Some detailed information.

    How are the parameters of asoft starter set?

    For our standard soft starters, the starting time,starting voltage and stopping time are easily se-lected using potentiometers. The values can befinely adjusted within the usual setting ranges.

    This also applies to soft starters with motoroverhead protection: the rated motor current,trip class, and current limit can be adjustedvia potentiometers.The wide range of functions of our high-featuresoft starters is quickly set in a user-friendlyfashion using the integrated keypad with amenu-prompted graphic display; this meansthat it is extremely simple to commission andtroubleshoot the devices.

    And even more benefits.

    Why is closed-loop torque controlthe better solution?Current and voltage fluctuations when poweringup: These are problems that the public utilitycompanies have. Their equipment is stressed bythe abrupt current demand. Minimize the mainte-nance costs of their equipment and your powerbill, use the soft torque control of our high-feature soft starter.

    And what about motor overloadprotection?

    Straightforward: For many applications, we havesimply integrated the motor overload protectionfunction into our soft starter. This means that the

    time and costs associated with additional wiringare eliminated and the soft starter itself is protect-ed against overload. In all of the other cases,utilize the advantages of our modular SIRIUS sys-tem and use our circuit-breaker or overload relay.Everything simply fits together.

    What are the advantages of theinside-delta circuit?

    With the inside-delta circuit, the phases of thesoft starter are connected in series to the indi-vidual motor windings. This means that the softstarter only has to conduct the phase current,i. e. approx. 58 % of the rated motor current(line current). Our soft starters automatically de-tect the circuit configuration which means that,in some cases, significantly smaller devices canbe used.

    Mdirectstart

    M

    nN

    N

    M load (e. g. pump)

    Msoft startertorque controlled

    Msoft startervoltage controlled

    123

    3)

    2)

    1)

    Rated current I e of the starter correspondsto 58 % of the rated motor current I N6 cables (the same as for star-deltastarters) to the motor

    L1L2L3NPE

    U2

    U1

    T1

    L1

    L2

    T2V1

    V2

    W2 W1 T3 L3

    I e

    I N

    Inside-delta circuit

    Rated current I e of the starter corre-sponds to the rated motor current I N3 cables to the motor

    L1L2L3NPE

    I e

    I N

    Standard circuit

    Speed

    Torque

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    UL1-L3

    = phase control angle

    Principle of the line supply phasecontrol using semiconductor elements for soft starters

    L1 L2 L3

    G1

    UL1 -L3

    M3~

    Technology in detail:Soft starting with SIRIUS.

    What are the benefits of the selectablecurrent limiting?

    Increasingly more power utility companies are de-manding that certain current limits are main-tained when starting. This keeps the stress on theline supplies low by reducing the starting cur-

    rents. The selectable current limiting of our softstarters is precisely the solution to achieve this.

    Do all of the three phases have to be

    controlled?No. When operationally switching, this is not nec-essary for smooth motor starting with our soft al-ternative, two controlled phases are sufficient forthe standard soft starters. But that isnt all oursolution not only considerably reduces the cost,but also the space taken up in the cabinet. How-ever, if the inside-delta circuit configuration isto be used, then the third phase must also becontrolled.

    Is an external bypass contactor required?

    No. Thanks to the integrated bypass contact sys-tem, a bypass contactor can be completely elimi-nated and the power loss of the power semicon-ductors can be sustainably minimized.

    How are the connections made?

    All of the devices belonging to our modular SIRIUSsystem are connected using standard techniques.Both screw and spring-loaded terminals are stand-ard options other connection systems are usedwhere available.

    And, when it comes to communications?

    Of course our soft starters can communicate withthe outside world. For our high-feature softstarters we use a communications module forPROFIBUS DP.

    Are there other ways of softly startinga motor?

    A frequency converter can also be used to softlystart a motor. However, frequency converters onlymake sense if, in addition to starting, the motorspeed is also to be varied in operation and thishas its price.

    Speed

    Directstart

    Time

    Softstarter

    Star-delta

    100%

    58%Ramptime

    I N

    I directstart

    I star-delta

    I softstarter

    Motor current Motor momentMotor voltage

    MN

    Mdirectstart

    M star-delta

    M softstarter

    nNnN

    Speed

    n

    I A

    I S

    I N

    I B

    tR

    US

    UN

    U

    t

    Soft start with voltage rampand current limiting

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    With a recurrent quality, the starsrevolve around the Polar star thecelestial pole in the heavens.

    It is soothing when softness

    always returns

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    1

    Our well-proven stars are used to start motors in standard applications al-

    most as long as the stars remain in the heavens. Just like up there, it also

    pays to take a closer look down here. New stars are being continually born.

    Just like our extended family of SIRIUS soft starters. And why does it make

    sense to look there? Because it is the ideal starter solution for standard ap-

    plications thanks to the compact design, integrated current limiting and

    additional features.

    ... SIRIUS soft starters

    for standard applications.

    The new standard is called softness

    In the past, the direct and the star-delta start were typical starting solu-tions for standard applications. Today, the advantages that a sof t starteroffers are being increasingly utilitzed. SIRIUS soft starters, can improvethe starting characteristics of escalators, elevators, conveyor belts andpumps this is because soft starters simply start more softly than anelectromechanical starter. Not only is the stress on the drive systemespecially reduced but also the stress on the line supply. This, therefore,plays a role in reducing the costs of plants and systems and that fromvarious perspectives.

    We have a complete range of soft starters in various sizes for almost everyapplication. This means that you can optimally adapt your drive to the ap-plication. For instance, the SIRIUS 3RW30/31 which controls two phases is especially suitable for standard applications up to 55 kW. Our new SIR-IUS 3RW40 with a power range from 75 kW to 250 kW can also handle so-phisticated tasks the soft way. And by the way the family of soft startershas been complemented by the smallest soft starter in the world whichcontrols two phases the SIRIUS 3RW3003.

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    Some basic information.

    Just what are the advantages of soft

    starting and stopping?There are many, many advantages. TheSIRIUS 3RW30/31 reduces the stress on themotor by reducing the starting torque. Italso provides protection against hazardousvoltage spikes as less current is drawn fromthe line supply. This means that line voltagedips can be reliably avoided.

    What can the SIRIUS 3RW30/31 offer?

    Our SIRIUS 3RW30/31 is especially com-pact because we have consequentially op-

    timized its power modules utilizing hybridtechnology. This allows for side-by-sidemounting up to 60 C. It can be quicklyengineered and is simply installed as itonly has 3 motor feeder cables. Narrow,fuseless load feeders can be assembledusing just one single device e. g. usingthe SIRIUS 3RV motor starter protector.Fused load feeders can also be imple-mented quickly in a space-saving fashionin conjunction with thermal or electronic

    SIRIUS 3RV overload relays.

    How safe and reliable is it?

    Thanks to its phase control technology,the SIRIUS 3RW30/31 is a dependablepartner that guarantees safe and reliableoperation.

    Where can I use it?

    It still cannot be used in space but downhere on earth it can be utilized almost every-

    where. It can be used in about every standardapplication up to a motor power rating of55 kW at 400 V (60HP/460V). For example,to drive conveyor belts, compressors, grind-ing machines, saws, mixers, to name but afew. The SIRIUS 3RW30/31 is also availablein size S0 for pole-changing motors.

    Lets talk about thefunctionality.

    How is the SIRIUS3RW30/31 set?

    Starting time, start-ing voltage and thestopping time can beeasily and simply set

    using 3 potentiometers. This is the reasonthat the soft starter always does an optimumjob each and every time.

    Belt slippage on heating systems (HVAC) blowers or water pressure surges in industrial washing systems are

    just two of many potential problems that can occur if motors output too much power when starting. Such

    problems can be reliably tackled using our SIRIUS 3RW30/31 up to 55 kW (at 400 V). But the best is yet to

    come the SIRIUS 3RW30/31 is the only soft starter in the world that offers the identical sizes within a family

    of devices. This makes it possible to easily change-over from direct to soft starting.

    With a size of only 22.5 mm, the 3RW3003 is

    the smallest soft starter in the world. At thesame time, it offers all of the advantages andpossibilities the big brother SIRIUS 3RW30 has.

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    13/323RW30/3How do I control the soft starter?

    SIRIUS 3RW30/31 can be directly controlledfrom the PLC without having to use any in-

    terface relays or directly via the control in-put. From size S0 onwards, the operatingstate is signaled using 2 relay outputs.

    And even more value added.

    What do I save?

    In the control cabinet, up to 70 % whencompared to star-delta starters (example22 kW: 55 mm wide instead of 178 mm).And it also pays to use SIRIUS 3RW30/31when it comes to installation: It only has3 instead of 6 motor feeder cables.

    12

    Does SIRIUS 3RW30/31 make economicsense?

    Every time thanks to the standardized pro-

    duction, SIRIUS 3RW30/31 not only guaran-tees reliable operation, but it does so at anespecially attractive price.

    What accessories are available?

    We have an extensiverange of accessoriesfor our soft starters.For example, fans(from size S0) thatcan be simply

    snapped on ensure that you can useSIRIUS 3RW30/31 in almost any mountingposition or even at higher operating frequen-cies. We also have terminal covers that can besimply mounted (sizes S2, S3) for optimumshock hazard protection.

    Changeover made easy:SIRIUS 3RW30/31 up to 100 A.

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    Some basic information.

    Just what does the SIRIUS 3RW40 offer?

    Just like all of our soft starters, SIRIUS 3RW40is integrated into the modular SIRIUS system.This means that you can enjoy the benefitsyou perhaps already know from the otherSIRIUS switching devices such as identicalsizes and standard connection systems. Bythe way, when it comes to size: The especial-ly compact design of the SIRIUS 3RW40means that it is only half the size of a com-parable star-delta starter. Space problems incontrol cabinets are now a thing of the past.Thanks to the 3-conductor connection, thedevices can be quickly and simply engineeredand installed.

    What makes SIRIUS 3RW30/31different?

    SIRIUS 3RW40 has all of the advantages ofthe 3RW30/31. It also offers more functionsand has a unique feature in this power range it controls two phases. Test it we are sure

    that you will be convinced.

    Lets talk about thefunctionality.How is the SIRIUS 3RW40 set?

    The starting voltage, starting and stoppingtimes of the voltage ramp, and the currentlimit can be continuously set in a user-friendlyfashion using rotary potentiometers. Just likethe SIRIUS 3RW30/31. The rated motor current,the release time, and the motor overloadfunction reset are handled, just like theSIRIUS overload relays, using potentiometers

    and buttons. In this case, you dont have tolearn anything new.

    SIRIUS 3RW40 is not only a new member of our SIRIUS family of soft starters it is the shining star among

    the soft starters. It has an innovative control technique that up until now makes it the only soft starter in the

    world that controls two phases in the power range up to 250 kW / 400 V (400HP/460V). However, as a result

    of its especially compact design, it is also the smallest therefore ensuring a space-saving and transparent

    control cabinet layout. It is more than just a supplement to our SIRIUS 3RW30/31 series of soft starters that

    control two phases.

    What are its distinguishing features?

    SIRIUS 3RW40 has the new patented controltechnique Polarity Balancing. This tech-

    nique avoids DC current components in softstarters that control two phases. For softstarters that control two phases, the currentresulting from the superimposition of thetwo control phases flows in the uncontrolledphase. Therefore, from the pure physics, thethree phase currents are not symmetricallydistributed while the motor is starting. Thiscannot be influenced, but in most applica-tions not uncritical. In addition to this dis-symmetry, when the power semiconductors

    are controlled in both of the controlled phas-es, then the DC current components can oc-cur. For starting voltages of less than 50 %,this can result in a significant amount ofnoise at the motor. Polarity Balancing relia-bly eliminates these DC components whilethe motor starts. It generates uniform motorstarting characteristics regarding speed,torque and current increase. In this case, theacoustic quality of the starting operation hasalmost the same quality as that of a startingdevice that controls all three phases.

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    This is all made possible by continuously anddynamically aligning and balancing the cur-rent half waves of different polarities whilethe motor is accelerating.

    Does it have other integrated protec-tive functions?

    SIRIUS 3RW40 is, as standard, equippedwith an optimum level of functionality. Anintegrated bypass contact system reduc-es the power loss of the soft starter in op-eration. It reliably ensures that the ambienttemperature of the switching devices doesnot increase. The overload release timescan be variably set using a 4-stage, rotarypotentiometer. Thanks to the integratedmotor overload protection , according toIEC 60 9474-2, you do not require an addi-tional overload relay therefore savingspace in the control cabinet and wiring in

    the load feeder. An intrinsic device protec-tion prevents the thyristors from beingthermally overloaded avoiding damage tothe power module. The thyristors can beoptionally protected against short circuitsusing SITOR semiconductor protectionfuses. Current spikes at power-on are alsoreliably avoided thanks to the adjustablecurrent limiting.

    14

    Does the SIRIUS3RW40 havediagnosticfunctions?

    Yes thanks to theintegrated status andfault monitoring.

    Three LEDs keep you up to date about theoperating state and possible faults e. g.

    inadmissible release time (CLASS setting),line supply or phase failure, disconnectedload, thermal overload or device faults, anderrors.

    And even more value added.

    What accessories are available?

    We offer an extensive range of accessories forour soft starters. For instance, frame terminal

    blocks, accessories for mechanical reset, amodule for a remote reset, a sealed cover, orterminal covers that can be simply mountedto provide optimum shock hazard protection.

    High functionalityfor a low price SIRIUS 3RW40.

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    For a soft but powerful start

    When a Supernova explodes, things getpretty hot up there with several milliondegrees Celsius as was the case back in 1987.

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    16

    Thank heavens things down here on earth dont get quite so hot as when a

    Supernova explodes. But down here, from time to time, things can get hot

    for motor starters. It is good to know that for applications with higher re-

    quirements, we have our extended family of high-feature soft starters

    with a compact design, closed-loop torque control, graphic display, com-

    munications link via PROFIBUS and many more powerful features fully in-

    tegrated into the modular SIRIUS system.

    ... our

    high-feature soft starter.

    Our family of soft starters has been expanded by the SIRIUS 3RW44 series thusmaking soft starting and stopping also attractive for difficult starting opera-tions. The highest degree of functionality in conjunction with the simplest oper-ator control and extensive diagnostics functionality packaged in a sophisticated

    design are only just some of the reasons why the SIRIUS 3RW44 is a valuable al-ternative to starting and stopping motors using a frequency converter.

    SIRIUS 3RW44size

    up to 45 kW

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    Some basic information.

    What can the SIRIUS 3RW44 offer?

    Due its extremely compact design, theSIRIUS 3RW44 is completely in-line withthe long family tradition of SIRIUS softstarters. It is the ideal device when a space-saving transparent control cabinet layoutis required. Our innovative SIRIUS 3RW44soft starters offer an attractive alternativefor optimized motor starting and stoppingwith a high cost-saving potential when

    compared to using a frequency converter.The new closed-loop torque control and a se-lectable current limiting ensure that you canuse our high-feature soft starters for almostevery conceivable application. SIRIUS 3RW44guarantee that torque surges and currentspikes are reliably avoided when starting andstopping motors. This allows costs to be savedwhen dimensioning the switchboards andwhen it comes to servicing and maintainingyour range of machinery. With our SIRIUS3RW44, you save, especially when it comesto size and device costs whether for astandard circuit (in-line) or inside-delta circuit.

    Lets talk about thefunctionality.

    How is the SIRIUS 3RW44 commissionedand operated?

    With its state-of-the-art ergonomic operatorprompting, the commissioning of a SIRIUS3RW44 is almost childs play meaning itcan be quickly brought up to speed. This is all

    made possible using a keypad with a menu-prompted, multi-line graphic display with

    Packed with the highest degree of functionality, the SIRIUS 3RW44 also handles difficult starting operations

    simply but softly. Thanks to its innovative closed-loop torque control, it can be used to start drives up to a

    power rating of 710 kW at 400 V in a standard circuit configuration or up to 1200 kW at 400 V in an inside-

    delta circuit configuration. The functionality designed for simple handling promises to offer the non plus

    ultra when it comes to operator-friendliness.

    background lighting.Optimized motorstarting and stoppingcan be selected withjust a few settings quickly, simply andreliably. Transparency

    regarding the parameterization and handlingin operation is always ensured using 4-keyoperator control and plain text displays forevery menu item. During operation andwhen the control voltage is connected,measuring and operating values are continu-ously indicated on the display field. Alarm

    and fault messages are also output. You canconnect an external display and operatormodule to the soft starter using a connectingcable. This means that, for instance, the ac-tual messages can be directly read at thedoor of the control cabinet.

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    Is SIRIUS 3RW44communications-capable?

    Yes our SIRIUS 3RW44 can be optionally ret-rofitted with a PROFIBUS DP module. SIRIUS3RW44 can be easily and quickly integratedinto higher-level controls thanks to its com-munications capability, its control inputs andits programmable relay outputs.

    And additional value added.

    And if things have to move slower?

    A crawl function is available for positioningand setting up tasks. The motor can be con-trolled in both directions of rotation with areduced torque and adjustable low speed.

    And if things have to move faster?

    In order to quickly stop driving loads, for theSIRIUS 3RW44, we can offer a combined DCbraking function.

    And the accessories?

    We offer an extensive range of accessoriesfor our range of soft starters. For instance,a display and operator module that can bemounted in the cabinet door or the plug-inPROFIBUS DP module. Other availableaccessories include: Box terminal blocks

    that can be easily mounted and terminalcovers from the modular SIRIUS system toprovide optimum shock hazard protection.

    Does the SIRIUS 3RW44 have otherintegrated protective functions?

    Our SIRIUS 3RW3 isequipped, as stand-ard, with an optimumdegree of functional-ity. An integrated by-pass contact systemreduces the heat loss

    of the soft starter in operation. This reliablyprevents the ambient temperature aroundthe switching devices from increasing. TheSIRIUS 3RW44 has an internal device over-load protection. This prevents the thyristorsin the power module from being thermallyoverloaded, e. g. as a result of inadmissiblyhigh power-on operations. The wiring timeand costs to mount an additional motoroverload relay are eliminated as the SIRIUS3RW44 also handles this function. It doesntmake any difference as to whether selecta-ble release times or thermistor motor pro-tection functions are required: You are al-ways on the safe side with SIRIUS 3RW44!The thyristors can be optionally protectedagainst short circuit using SITOR semicon-ductor protection fuses. And thanks to theselectable current limiting, current spikes atpower-on are reliably avoided.

    18

    High-feature, highest degree ofuser-friendliness SIRIUS 3RW44.

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    SIRIUS 3RW30 when theconveyor belt must movesoftly in reversing opera-tion.

    Roller conveyors are used, for example, inpackage distribution centers to transportpackets to and from the various stations. Inorder for this to function, the direction of

    rotation of the 11-kW motor must be ableto be changed so that both transport direc-tions can be implemented.

    A roller conveyor belt places somehigh demands: The roller conveyor belt must start

    smoothly so that the conveyed productdoesnt slide or topple over whichcould cause damage.

    The wear and the maintenance intervalsat the machine should be kept as low aspossible. This is the reason that whenstarting, the drive belt should not slip.

    A voltage ramp should reduce the highstarting current when the motor starts.

    The load feeder should be kept as small aspossible in order not to overcrowd thecontrol cabinet.

    Optimum performance usingSIRIUS 3RW30:

    The roller conveyor is accelerated quicklyto the rated speed and stopped withoutany torque surges by optimally setting thevoltage ramps used for starting and stop-ping.

    The motor starting current is reduced.

    A contactor circuit is used to allow theconveyor belt to move in both directions.SIRIUS 3RA3 reversing contactor combina-tions are used.

    SIRIUS 3RV circuit-breakers (MSPs) are usedfor the load feeder and motor protection.

    Maximum savings regarding wiring andspace requirement are guaranteed byusing SIRIUS system components.

    SIRIUS 3RW40 whenhydraulic pumps have tostart softly.

    In addition to many other applications, theSIRIUS 3RW40 is optimally suited for ensur-ing that hydraulic pumps start and stopsoftly. Hydraulic pumps are, for example,used up to a power of 200 kW in the pro-duction of sheet metal parts to drive thenecessary presses.

    Driving hydraulic pumps is a sensitiveissue:

    The motor starting current must bereduced in order to avoid overloading thehigher-level line transformer.

    Generally, integrated motor protection isrequired in order to reduce wiring costsand save space in the electrical enclosures.

    Hydraulic pumps should start and stopsoftly in order to reduce the mechanicalstress on the drive and pump to a mini-mum due to the torque surge when start-ing and stopping.

    A sensitivity that SIRIUS 3RW40inherently has:

    The selectable current limit of the SIRIUS3RW40 device limits the load on the line

    transformer when the motor starts.

    Motor protection is guaranteed using amotor overload relay integrated into thesoft starter with selectable release times.

    Using the selectable voltage ramp, thehydraulic pump is started and stoppedwithout any torque surge.

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    20

    Best Practice:SIRIUS soft starters in use.

    SIRIUS 3RW44 if millingmachines with DC currentbraking want to experiencea soft start.

    In the production of engines, a milling headis used to machine the necessary bores inthe aluminum engine block. When the 15-kW motor is powered down, long stopping

    times occur due to the high moment of in-ertia of the milling head. This results in highidle times when changing tools and settingup the machine.

    The starting behavior of milling ma-chines requires the highest degree offunctionality:

    Milling machines require an optimizedtorque-controlled starting behavior sothat the drive belts do not slip whichwould result in faster wear.

    The motor starting current must bereduced in order to keep the stressing onthe line supply as low as possible.

    The motor must be braked using DC cur-rent in order to reduce the long stoppingtimes of the machine.

    The optimum solution usingSIRIUS 3RW44

    SIRIUS 3RW44 with closed-loop torquecontrol and a dynamic DC braking func-tion is used to optimally handle thisdifficult application.

    Belt slippage when starting is preventedusing the closed-loop torque control withset torque limit function. This brings themilling head is quickly up to the ratedspeed without drive belt slippage.

    The motor starting current is limited to aset maximum value using a higher-levelcurrent limiting function.

    The optimum setting of the dynamic DCcurrent braking function stops the millinghead in a short time.

    Our high-feature SIRIUS 3RW44 soft starteralso optimally handles motor and deviceoverload protection.

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    SIRIUS 3RW30/31 SIRIUS 3RW40 SIRIUS 3RW44

    Standard applications High-feature applications

    1) for 3RW3003 up to 230 V2) not for 3RW30033) not possible in an inside-delta circuit

    X = function available = function not available

    Overview of SIRIUS soft starters

    Rated current at 40 C A 3 ... 100 132 ... 432 29 ... 1214Rated voltage V 200 ... 575 200 ... 600 200 ... 1000Motor power at 400 V (standard circuit) kW 1.1 ... 55 75 ... 250 15 ... 710Motor power at 400 V (inside-delta circuit) kW 22 ... 1200Ambient temperature (in operation) C 25 ... 60 25 ... 60 0 ... 60Soft starting/stopping x1) x xVoltage ramp x x xStarting/stopping voltage % 40 ... 100 40 ... 100 20 ... 100Ramp time s 0 ... 20 0 ... 20 1 ... 360Closed-loop torque control xStarting/stopping torque % 20 ... 100Torque limiting % 20 ... 100

    Ramp time s 1 ... 360Integrated bypass contact system x2) x xIntrinsic device protection x xMotor overload protection x xSelectable current limiting x xInside-delta circuit configuration xBreakaway pulse xCrawl in both directions xPump stopping xCombined DC braking function x 3)

    Motor heating xCommunications With PROFIBUS DP (option)

    External display and operator module (option)Operating measured value display xFault logbook xEvent list xNon-return pointer xTrace function xProgrammable control inputs and outputs xNumber of parameter sets 1 (2 for 3RW31) 1 3Parameterizing software xPower semiconductors (thyristors) 2 controlled phases 2 controlled phases 3 controlled phasesScrew terminals x x xSpring-loaded terminals (x) only 3RW3003 x xUL/CSA x4) x xCE marking x x xSoft starting under heavy-duty starting conditions xEngineering support Win-SIKOSTART, electronic selection tool, Technical Assistance +49 9131 7 43833

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    23/32OVERVIEW

    22

    We have the optimum soft starter forevery application: You have the choice.

    Typical application examples

    Standard applications Construction/construction material machines

    Presses Escalators Transport systems Pumps Fans Climate control systems

    Blowers Conveyor belts Compressors and cooling systems Drives

    High-feature applications Pumps (also in the oil industry) Fans and blowers Compressors Cooling systems Industrial refrigeration systems Water pumping Pumping systems and elevators Hydraulics Machine tools Mills

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    The information provided in this brochure containsmerely general descriptions or characteristics of performance which in case of actual use do notalways apply as described or which may changeas a result of further development of the products.An obligation to provide the respectivecharacteristics shall only exist if expressly agreed

    in the terms of contract.

    SIRIUSProduct overview

    SIRIUSCage Clamp system

    ECOFAST

    MicromasterStandard drives

    MASTERDRIVESMotion Control

    Die Erde erwa

    cht.

    Mit SIRIUS Sta

    rten.

    siriusS TA R T E N

    SIRIUSStart

    Siemens AG

    Automation and DrivesLow Voltage Controls and Distribution DivisionP.O. Box 48 48, D-90327 Nuremberg

    www.siemens.com/sanf ts tar ter

    Ordering by fax +49/911/978-3321 CD/Z 1096SIRIUS

    Company/department

    Name

    Street, postal code/city

    Telephone/fax

    Please send me the selected information to the following address:

    SIRIUSSchalttechnik

    sirius

    The complete u

    niverse of Indu

    strial Controls

    ..

    You have it a

    t your fingertip

    s.

    Everything. Ea

    sy. SIRIUS.

    IN D US T R IA

    L C ON T R O

    L S

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    Dynamic performance re-interpreted.The extended generation of soft starters.

    siriusSOFTSTARTERS

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    The range at a glance

    Overview, accessories and spare parts for SIRIUS soft star ters

    Accessories

    Box terminal block

    Terminal covers for the box terminals

    Connection cover for cable lug and busbar connection

    Seal cover

    Module for remote RESET

    Mechanical RESET comprising:

    Resetting plunger, holder and former

    Matching IP65 pushbutton

    Extension actuator

    Wire release with holder for RESET

    Fan

    Spare partsFan

    3RW3003

    3RP1902

    3RW301. 3RW302.

    3RW3926-8A

    3RW3926-8A

    3RW303.

    3RT1936-4EA2

    3RW3936-8A

    3RW3936-8A

    3RW304.

    Included in scope of sup

    3RT1946-4

    3RT1946-4

    3RW3936-

    3RW3936-

    Please observe the information on the last page

    Overview, SIRIUS soft starters

    Rated control supply voltage V

    Rated control supply current mA

    Rated frequency Hz

    Rated operating voltage V

    Rated frequency Hz

    Rated operating current le (53 A AC)

    at 40 C A

    at 50 C A

    at 60 C A

    Permissible ambient temperature C

    Starting current/max. starting time %le /sSize

    Control electronics

    Power electronics

    AC/DC 24 230 (10%)

    approx. 25 4

    50/60 (10%)

    AC 200 400 (10%)

    50/60 (10%)

    3

    2.6

    2.2

    25 +60

    300/0.222.5 mm

    3RW3003-.CB54

    3RW3003-.CB54

    AC/DC 24 (15 %/+10%)

    approx. 50

    50/60 (10%)

    AC 200 460 (10%)

    50/60 (10%)

    3RW301. 3RW302.

    6/9 12.5/16/25

    5/8 11/14/21

    4/7 9/12/18

    25 +60 25 +60

    250/2 300/2S00 S0

    3RW3-1.B0.

    3RW3-1.B.4

    AC 460 575 (10%)

    50/60 (10%)

    3RW303. 3RW304.

    32/38/45 63/75/100

    27/32/38 54/64/85

    23/27/32 46/54/72

    25 +60 25 +60

    300/3 300/4S2 S3

    AC/DC 110 230 (15%/+1

    approx. 25 20

    50/60 (10%)

    3RW3-1.B1.

    3RW3-1.B.5

    Standard applications

    SIRIUS 3RW3003 and 3RW30/31

    SIRIUS 3RW3003 and 3RW30/31

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    405.

    955-4G to 70 mm 2

    956-4G to 120 mm 2

    956-4EA2

    956-4EA1

    4900-0PB00

    1900-2AB71 AC/DC 24 V

    1900-2AF71 AC/DC 115 V

    900-2AM71 AC/DC 230 V

    1900-1A

    000-0EA11

    335

    1900-1B Length 400 mm

    1900-1B Length 600 mm

    4936-8VX30 AC 115 V

    4936-8VX40 AC 230 V

    3RW407.

    3RT1966-4G to 240 mm 2

    3RT1966-4EA2

    3RT1966-4EA1

    3RW4900-0PB00

    3RU1900-2AB71 AC/DC 24 V

    3RU1900-2AF71 AC/DC 115 V

    3RU1900-2AM71 AC/DC 230 V

    3RU1900-1A

    3SB3000-0EA11

    3SX1335

    3RU1900-1B Length 400 mm

    3RU1900-1B Length 600 mm

    3RW4947-8VX30 AC 115 V

    3RW4947-8VX40 AC 230 V

    3RW442.

    Included in thescope of supply

    3RT1956-4EA2

    3RT1956-4EA1

    3RW4936-8VX30 AC 115 V

    3RW4936-8VX40 AC 230 V

    3RW443.

    3RT1955-4G to 70 mm 2

    3RT1956-4G to 120 mm 2

    3RT1956-4EA2

    3RT1956-4EA1

    3RW4936-8VX30 AC 115 V

    3RW4936-8VX40 AC 230 V

    3RW444.

    3RT1966-4G to 240 mm 2

    3RT1966-4EA2

    3RT1966-4EA1

    3RW4947-8VX30 AC 115 V

    3RW4947-8VX40 AC 230 V

    2

    15 (15%/+10%)

    (10%)

    00 460 (15%/+10%)

    (10%)

    405.

    62

    45

    +60

    40..-.BB3.

    40..-.BB.4

    AC 230 (15%/+10%)

    50/60 (10%)

    AC 400 600 (15%/+10%)

    50/60 (10%)

    3RW407.

    230/280/356/432

    205/248/315/385

    25 +60

    S12

    3RW40..-.BB4.

    3RW40..-.BB.5

    AC 115 (15%/+10%)

    50 60 (10%)

    AC 200 460 (15%/+10%)

    50/60 (10%)

    22 versions

    29 1214

    26 1051

    0 +60

    3RW44..-.BC3.

    3RW44..-.BC.4

    AC 230 (15%/+10%)

    50 60 (10%)

    3RW44..-.BC4.

    AC 400 600 (15%/+10%)

    50/60 (10%)

    22 versions

    29 1214

    26 1051

    0 +60

    3RW44..-.BC.5

    AC 400 690 (15%/+10%)

    50/60 (10%)

    22 versions

    29 1214

    26 1051

    0 +60

    3RW44..-.BC.6

    High feature applications

    US 3RW40 SIRIUS 3RW44

    US 3RW40 SIRIUS 3RW44

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    1) Rated control supply voltage Us 24 230 V AC/DC

    SIRIUS 3RW3003 and 3RW30/31

    Rated Rated Rated power of Rated Rated power of Order No.operating operating three-phase motors operating three-phase motorsvoltage U e current Ie at the rated operating current Ie at the rated operating

    voltage U e voltage U e

    115 V 230 V 400 V 500 V 115 V 200 V 230 V 460 V 575 VV A kW kW kW kW A HP HP HP HP HP

    Soft starters for simple staring applications and high switching frequency1)

    200 ... 400 3 0.55 1.1 2.6 0.5 0.5 3RW30 03- CB54Order No. supplement for the connection type

    with screw terminals 1with spring-loaded terminals 2

    Soft starters for three-phase induction motors200 ... 460 6 1.5 3 4.8 1 1 3 3RW30 14-1CB 4

    9 2.2 4 7.8 2 2 5 3RW30 16-1CB 412.5 3 5.5 11 3 3 7.5 3RW30 24-1AB 416 4 7.5 14 3 3 10 3RW30 25-1AB 425 5.5 11 21 5 5 15 3RW30 26-1AB 432 7.5 15 27 7.5 7.5 20 3RW30 34-1AB 438 11 18.5 32 10 10 25 3RW30 35-1AB 4 45 11 22 38 10 15 30 3RW30 36-1AB 463 18.5 30 54 15 20 40 3RW30 44-1AB 475 22 37 64 20 25 50 3RW30 45-1AB 4100 30 55 85 25 30 60 3RW30 46-1AB 4

    460 ... 575 12.5 7.5 11 7.5 10 3RW30 24-1AB 516 11 14 10 10 3RW30 25-1AB 525 15 21 15 20 3RW30 26-1AB 532 18.5 27 20 25 3RW30 34-1AB 538 22 32 25 30 3RW30 35-1AB 545 30 38 30 40 3RW30 36-1AB 563 37 54 40 50 3RW30 44-1AB 575 55 64 50 60 3RW30 45-1AB 5100 70 85 60 75 3RW30 46-1AB 5Order No. supplement for the rated control supply voltage U s

    24 V AC/DC 0110 ... 230 V AC/DC 1

    Soft starters with two-ramp control for three-phase motors with two speeds (2x pole-changing)200 ... 460 12.5 3 5.5 11 3 3 7.5 3RW31 24-1CB14

    16 4 7.5 14 3 3 10 3RW31 25-1CB1425 5.5 11 21 5 5 15 3RW31 26-1CB14

    460 ... 575 12.5 7.5 11 7.5 10 3RW31 24-1CB1516 7.5 14 10 10 3RW31 25-1CB1525 15 21 15 20 3RW31 26-1CB15

    Soft starters for single-phase motors115 ... 240 25 2.2 4 21 1.5 3 3 3RW30 26-1AA12

    38 3 5.5 32 2 5 5 3RW30 35-1AA1275 5.5 11 64 5 10 10 3RW30 45-1AA12

    40 C ambient temperature 50 C ambient temperature

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    SIRIUS 3RW40

    Rated Rated Rated power of Rated Rated power of Order No.operating operating three-phase motors operating three-phase motorsvoltage U e current Ie at the rated operating current Ie at the rated operating

    voltage U e voltage U e

    230 V 400 V 500 V 200 V 230 V 460 V 575 VV A kW kW kW A HP HP HP HP

    200 ... 460 134 37 75 117 30 40 75 3RW40 55- BB 4162 45 90 145 40 50 100 3RW40 56- BB 4230 75 132 205 60 75 150 3RW40 73- BB 4280 90 160 248 75 100 200 3RW40 74- BB 4356 110 200 315 100 125 250 3RW40 75- BB 4432 132 250 385 125 150 300 3RW40 76- BB 4

    400 ... 600 134 75 90 117 75 100 3RW40 55- BB 5162 90 110 145 100 150 3RW40 56- BB 5230 132 160 205 150 200 3RW40 73- BB 5280 160 200 248 200 250 3RW40 74- BB 5356 200 250 315 250 300 3RW40 75- BB 5432 250 315 385 300 400 3RW40 76- BB 5

    Order No. supplement for the connection type spring-loaded terminals 2Screw terminals 6

    Order No. supplement for the rated control supply voltage U s 115 V AC 3230 V AC 4

    40 C ambient temperature 50 C ambient temperature

    4

    Please observe the information on the last page

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    Standard circuit Standard circuit40 C ambient temperature 50 C ambient temperature

    Rated Rated Rated power of Rated Rated power of Order No.operating operating three-phase motors operating three-phase motorsvoltage U e current Ie at the rated operating current Ie at the rated operating

    voltage U e voltage U e

    230 V 400 V 500 V 690 V 1000 V 200 V 230 V 460 V 575 VV A kW kW kW kW kW A HP HP HP HP200 ... 460 29 5.5 15 26 7.5 7.5 15 3RW44 22- BC 4

    36 7.5 18.5 32 10 10 20 3RW44 23- BC 447 11 22 42 10 15 25 3RW44 24- BC 457 15 30 51 15 15 30 3RW44 25- BC 477 18.5 37 68 20 20 50 3RW44 26- BC 493 22 45 82 25 25 60 3RW44 27- BC 4

    400 ... 600 29 15 18.5 26 15 20 3RW44 22- BC 536 18.5 22 32 20 25 3RW44 23- BC 547 22 30 42 25 30 3RW44 24- BC 557 30 37 51 30 40 3RW44 25- BC 577 37 45 68 50 50 3RW44 26- BC 593 45 55 82 60 75 3RW44 27- BC 5

    400 ... 690 29 15 18.5 30 26 15 20 3RW44 22- BC 636 18.5 22 37 32 20 25 3RW44 23- BC 647 22 30 45 42 25 30 3RW44 24- BC 657 30 37 55 51 30 40 3RW44 25- BC 677 37 45 75 68 50 50 3RW44 26- BC 693 45 55 90 82 60 75 3RW44 27- BC 6

    Order No. supplement for the connection type Screw terminals 1spring-loaded terminals 3

    200 ... 460 113 30 55 100 30 30 75 3RW44 34- BC 4134 37 75 117 30 40 75 3RW44 35- BC 4162 45 90 145 40 50 100 3RW44 36- BC 4203 55 110 180 50 60 125 3RW44 43- BC 4250 75 132 215 60 75 150 3RW44 44- BC 4313 90 160 280 75 100 200 3RW44 45- BC 4356 110 200 315 100 125 250 3RW44 46- BC 4432 132 250 385 125 150 300 3RW44 47- BC 4

    400 ... 600 113 55 75 100 75 75 3RW44 34- BC 5134 75 90 117 75 100 3RW44 35- BC 5162 90 110 145 100 125 3RW44 36- BC 5203 110 132 180 125 150 3RW44 43- BC 5

    250 132 160 215 150 200 3RW44 44- BC 5313 160 200 280 200 250 3RW44 45- BC 5356 200 250 315 250 300 3RW44 46- BC 5432 250 315 385 300 400 3RW44 47- BC 5

    400 ... 690 113 55 75 110 100 75 75 3RW44 34- BC 6134 75 90 132 117 75 100 3RW44 35- BC 6162 90 110 160 145 100 125 3RW44 36- BC 6203 110 132 200 180 125 150 3RW44 43- BC 6250 132 160 250 215 150 200 3RW44 44- BC 6313 160 200 315 280 200 250 3RW44 45- BC 6356 200 250 355 315 250 300 3RW44 46- BC 6432 250 315 400 385 300 400 3RW44 47- BC 6

    Order No. supplement for the connection type spring-loaded terminals 2Screw terminals 6

    Order No. supplement for the rated control supply voltage U s AC 115 V 3AC 230 V 4

    SIRIUS 3RW44

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    Inside delta circuit Inside delta circuit40 C ambient temperature 50 C ambient temperature

    Rated Rated Rated power of Rated Rated power of Order No.operating operating three-phase motors operating three-phase motorsvoltage U e current Ie at the rated operating current Ie at the rated operating

    voltage U e voltage U e

    230 V 400 V 500 V 690 V 1000 V 200 V 230 V 460 V 575 VV A kW kW kW kW kW A HP HP HP HP200 ... 400 50 15 22 45 10 15 3RW44 22- BC 4

    62 18.5 30 55 15 20 3RW44 23- BC 481 22 45 73 20 25 3RW44 24- BC 499 30 55 88 25 30 3RW44 25- BC 4133 37 75 118 30 40 3RW44 26- BC 4161 45 90 142 40 50 3RW44 27- BC 4

    400 ... 600 50 22 30 45 30 40 3RW44 22- BC 562 30 37 55 40 50 3RW44 23- BC 581 45 45 73 50 60 3RW44 24- BC 599 55 55 88 60 75 3RW44 25- BC 5133 75 90 118 75 100 3RW44 26- BC 5161 90 110 142 100 125 3RW44 27- BC 5

    400 ... 690 50 22 30 45 45 30 40 3RW44 22- BC 662 30 37 55 55 40 50 3RW44 23- BC 681 45 45 75 73 50 60 3RW44 24- BC 699 55 55 90 88 60 75 3RW44 25- BC 6133 75 90 110 118 75 100 3RW44 26- BC 6161 90 110 132 142 100 125 3RW44 27- BC 6

    Order No. supplement for the connection type Screw terminals 1spring-loaded terminals 3

    200 ... 400 196 55 110 173 50 60 3RW44 34- BC 4232 75 132 203 60 75 3RW44 35- BC 4281 90 160 251 75 100 3RW44 36- BC 4352 110 200 312 100 125 3RW44 43- BC 4433 132 250 372 125 150 3RW44 44- BC 4542 160 315 485 150 200 3RW44 45- BC 4617 200 355 546 150 200 3RW44 46- BC 4748 250 400 667 200 250 3RW44 47- BC 4

    400 ... 600 196 110 132 173 125 150 3RW44 34- BC 5232 132 160 203 150 200 3RW44 35- BC 5281 160 200 251 200 250 3RW44 36- BC 5352 200 250 312 250 300 3RW44 43- BC 5

    433 250 315 372 300 350 3RW44 44- BC 5542 315 355 485 400 500 3RW44 45- BC 5617 355 450 546 450 600 3RW44 46- BC 5748 400 500 667 600 750 3RW44 47- BC 5

    400 ... 690 196 110 132 160 - 173 125 150 3RW44 34- BC 6232 132 160 200 - 203 150 200 3RW44 35- BC 6281 160 200 250 - 251 200 250 3RW44 36- BC 6352 200 250 315 - 312 250 300 3RW44 43- BC 6433 250 315 400 - 372 300 350 3RW44 44- BC 6542 315 355 500 - 485 400 500 3RW44 45- BC 6617 355 450 630 - 546 450 600 3RW44 46- BC 6748 400 500 710 - 667 600 750 3RW44 47- BC 6

    Order No. supplement for the connection type Screw terminals 2spring-loaded terminals 6

    Order No. supplement for the rated control supply voltage U s 115 V AC 3230 V AC 4

    SIRIUS 3RW44

    Please observe the information on the last page

    6

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    The information provided in this brochure containsmerely general descriptions or characteristics of performance which in actual case of use do notalways apply as described or which may changeas a result of further development of the products.An obligation to provide the respective characteristicsshall only exist if expressly agreed in the terms of contract

    Siemens AG

    Automation and DrivesLow-Voltage Controls and DistributionP.O. Box 48 48, 90327 NurembergGermany

    Fax-Bestellung +49 911 978-3321 CD/Z877SIRIUS

    More details and information (for example on the accessories and spare parts) are provided in Catalog LV 10Switching devices for industry or in the Internet under www.siemens.com/softstarter

    The specified motor power ratings are only approximate values. Soft starters should always be selected anddimensioned using the rated motor current as criterion (rated operating current). All Siemens soft starters aredesigned for normal starting conditions (moment of inertia of the total drive J Load < 10 J Motor ). If required,a larger device must be selected for conditions that deviate from this or for increased switching frequency.

    We recommend that the Win-SIKOSTART selection and simulation program is used.

    Motor power data based on DIN 42973 (kW) and NEC 96/UL508 (hp).